private void KeyDownHandler(object sender, KeyEventArgs e)
{
if (e.Key == Key.Delete)
{
Point pt = Mouse.GetPosition(this);
var hit = VisualTreeHelper.HitTest(this, pt);
if (hit == null)
{
return;
}
var hh = hit.VisualHit;
while (hh != null && !(hh is ItemVisualizer))
{
hh = VisualTreeHelper.GetParent(hh);
}
if (hh != null)
{
Items.Remove(((ItemVisualizer)hh).Item);
}
NewlyAddedRanges.Clear();
ResizeScrollbarThumb();
}
}
internal void EndUpdate()
{
NewlyAddedRanges.Clear();
_supressrebuild = false;
_stashRange.Rebuild();
ResizeScrollbarThumb();
}
internal void RemoveItem(Item item)
{
Items.Remove(item);
NewlyAddedRanges.Clear();
ResizeScrollbarThumb();
}